SE7813107L - Kristallfilterstruktur - Google Patents
KristallfilterstrukturInfo
- Publication number
- SE7813107L SE7813107L SE7813107A SE7813107A SE7813107L SE 7813107 L SE7813107 L SE 7813107L SE 7813107 A SE7813107 A SE 7813107A SE 7813107 A SE7813107 A SE 7813107A SE 7813107 L SE7813107 L SE 7813107L
- Authority
- SE
- Sweden
- Prior art keywords
- filter structure
- crystal filter
- crystal
- filter
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7813107A SE415428B (sv) | 1978-12-20 | 1978-12-20 | Kristallfilterstruktur |
US06/102,032 US4297659A (en) | 1978-12-20 | 1979-12-10 | Crystal filter structure |
IT7928193A IT7928193A0 (it) | 1978-12-20 | 1979-12-19 | Struttura di filtro a cristallo o filtro piezoelettrico per l'uso nelle comunicazioni elettriche. |
BR7908349A BR7908348A (pt) | 1978-12-20 | 1979-12-19 | Estrutura de filtro a cristal, do tipo polilitico |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7813107A SE415428B (sv) | 1978-12-20 | 1978-12-20 | Kristallfilterstruktur |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7813107L true SE7813107L (sv) | 1980-06-21 |
SE415428B SE415428B (sv) | 1980-09-29 |
Family
ID=20336654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7813107A SE415428B (sv) | 1978-12-20 | 1978-12-20 | Kristallfilterstruktur |
Country Status (4)
Country | Link |
---|---|
US (1) | US4297659A (sv) |
BR (1) | BR7908348A (sv) |
IT (1) | IT7928193A0 (sv) |
SE (1) | SE415428B (sv) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4484158A (en) * | 1982-07-07 | 1984-11-20 | General Electric Company | Monolithic crystal filter and method of manufacturing same |
US8784545B2 (en) | 2011-04-12 | 2014-07-22 | Mathena, Inc. | Shale-gas separating and cleanout system |
EP2313603A4 (en) * | 2008-06-30 | 2014-10-01 | Mathena Inc | ECOLOGICALLY SENSITIVE MUDGAS INCLUSION SYSTEM |
US9353586B2 (en) | 2012-05-11 | 2016-05-31 | Mathena, Inc. | Control panel, and digital display units and sensors therefor |
USD763414S1 (en) | 2013-12-10 | 2016-08-09 | Mathena, Inc. | Fluid line drive-over |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3209178A (en) * | 1965-09-28 | Fig.ii | ||
GB1153673A (en) * | 1967-01-18 | 1969-05-29 | Mullard Ltd | Improvements in or relating to Electrical Discharge Display Devices |
US3723920A (en) * | 1971-06-24 | 1973-03-27 | Gte Automatic Electric Lab Inc | Crystal filter assembly |
-
1978
- 1978-12-20 SE SE7813107A patent/SE415428B/sv unknown
-
1979
- 1979-12-10 US US06/102,032 patent/US4297659A/en not_active Expired - Lifetime
- 1979-12-19 IT IT7928193A patent/IT7928193A0/it unknown
- 1979-12-19 BR BR7908349A patent/BR7908348A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
US4297659A (en) | 1981-10-27 |
SE415428B (sv) | 1980-09-29 |
BR7908348A (pt) | 1980-09-16 |
IT7928193A0 (it) | 1979-12-19 |
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